Internal Process Controls - Control of Color Imaging Systems: Analysis and Design - page 507

300

( x d ) 3

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( x d ) 2

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( x d ) 1

150

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0

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Input gray levels

FIGURE 9.22 Reference TRCs for 256 input gray levels.

300 300

Reference TRC
Samples
TRC
Inverse TRC

Reference TRC
Samples
TRC
Inverse TRC

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200 200

150 150

100 100

50 50

0 0

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Gray levels Gray levels

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Reference TRC
Samples
TRC
Inverse TRC

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Gray levels

FIGURE 9.23 Inverse TRCs for 256 input gray levels shown for the three reference TRCs.

Case (b): In Figure 9.24a through c, the cyan sweep is displayed by processing
the cyan separation through three different reference TRCs. The cyan sweep when
processed through the printer model (Chapter 10) without any level 3 correction is